As I mentioned in my first post, go take a look at Flankers carrying R27s under their intake, missiles protruding a little in front of the intake is not an issue.
Your mention of heat and fumes for the rear missiles also plainly ignores real world examples like M2Ks and Rafales carrying missiles in pretty much the same position with no problems.
It just looks like you are grasping at straws here.
Making a miscalculation about the lengths and drawing the wrong conclusions is perfectly natural and nothing to be ashamed of, but changing your argument and stubbornly refusing to re-examine your position in light of the new information just looks silly and makes me feel you just got an axe to grind instead of really caring about the subject.
The lack of basic knowledge you are displaying is also pretty disappointing. Only the J11Bs use Chinese radars, the original Su27s and first J11s used Russian radars, which were later upgraded to add R77 compatibility, amongst other things.
First, don't be so defensive.
Second, did you notice how big R-27 is and how far the rack extend from the body? Two things. The further the missile is from the body, the less aerodynamic impact. second, you also have to consider the turbulence on the missile itself. A smaller and lighter missile is more delicate.
With Rafale, the missiles are also extended from the body. Also, pay attention to the missiles it carries - MICA, 3.1m vs PL-12 at 4m. Pay attention to Rafale's design. Rafale is about one meter shorter than J-10. Note how much less space the main landing gears occupies. If you take additional 1.5m space away between the front and rear missiles, do you think it will be able to carry four MICA's underbody, even though MICA is almost the same length as PL-8?
Last, let's use some logic. The CAC designers are not stupid. If there is any way for them to fit the PL-12's under the body, there is no way they would try to implement combo racks for the wing points. Those two hard points are the only ones for heavy and long anti-ground or anti-ship weapons if it has to carry the external tanks. That's simple logic.
Regarding J-11/Su-27, I was thinking about J-11B. Because obviously J-11 can carry R-77 because J-11A is Su-27. That's deductive logic. If you can find Su-27 with R-77, then you can deduct J-11 can carry R-77.
However, if you cannot find photos of Chinese J-11 (or Su-27) with R-77, then you cannot say for sure that China has a R-77 inventory. The rumors of contract is supporting evidence for inductive logic, but nobody can say 100% for sure based on rumors.
With underbody hard points on J-10, there is no evidence, photos or others, to support missiles on those hard points. I can even use the appearance of combo wing racks as evidence against your speculation.
In any case, relax. Read my posts a couple of posts up. Don't take any kind of discussion personal. Don't be so defensive. It is bad enough to fight the T-50 and LCA fanboys. Don't be a fanboy yourself.